Revision of the family Chasmocarcinidae Serène, 1964 (Crustacea, Brachyura, Goneplacoidea) Author Ng, Peter K. L. Author Castro, Peter text Zootaxa 2016 4209 1 1 182 journal article 37321 10.11646/zootaxa.4209.1.1 2de5b7bf-3975-458a-b200-07ec69f4e013 1175-5326 272646 849BAB5C-464A-4B4A-A586-5742411EDC01 Key to species of Statommatia n. gen. 1. Carapace conspicuously broad, width to length ratio 1.3–1.4 ( Fig. 16 D). Ambulatory meri relatively stout, broad ( Fig. 16 D). P2 merus with few pointed tubercles [New Caledonia]............................................... S. knudseni - Carapace not conspicuously broad, width to length ratio 1.1–1.3 (e.g., Fig. 16 A). Ambulatory meri relatively long, slender (e.g., Fig. 16 A). P2 merus unarmed...................................................................... 2 2. Carapace, outer surface of chelae covered with numerous small granules (e.g. Fig. 26 E). Ambulatory legs relatively short (e.g. Fig. 16 H)........................................................................................... 3 - Carapace, outer surface of chelae smooth or only with scattered small granules (e.g., Fig. 26 A). Ambulatory legs relatively long (e.g. Fig. 16 A)................................................................................... 4 3. Anteroexternal angle of merus of third maxilliped auriculiform ( Fig. 33 F). G1 distal half short, stout, gently curbing upwards ( Fig. 78 C–F) [ New Caledonia ]............................................................. S. granulosa n. sp. - Anteroexternal angle of merus of third maxilliped rounded, not auriculiform ( Fig. 33 D). G1 distal half conspicuously slender, distinctly curving laterally ( Fig. 78 A, B) [South China Sea]......................................... .. S. pubescens 4. G1 with distal half relatively stout, straight, gradually tapering to subtruncate tip ( Fig. 77 A–C) [Philippines; Papua New Guinea]........................................................................................ S. apta - G1 distal half slender, strongly tapering, gently curving upwards ( Fig. 77 I–K) [ Madagascar ]............ S. malagasy n. sp.